Mahantango Formation

Mahantango Formation
Stratigraphic range: Givetian, ~387 Ma
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Outcrop of the Mahantango on Rt. 522, Fulton County, Pennsylvania
TypeGeological formation
Unit ofHamilton Group
Sub-unitsSee: Description
UnderliesHarrell Shale and West Falls Formation
OverliesMarcellus Formation
Lithology
PrimaryShale
OtherLimestone, Siltstone
Location
RegionAppalachian Basin of
eastern North America
ExtentMaryland, Ohio, Pennsylvania, Virginia, and West Virginia
Type section
Named forMahantango Creek

The Devonian Mahantango Formation is a mapped bedrock unit in Pennsylvania, West Virginia, and Maryland.[1][2][3] It is named for the North branch of the Mahantango Creek in Perry and Juniata counties in Pennsylvania. It is a member of the Hamilton Group, along with the underlying the Marcellus Formation Shale.[4] South of Tuscarora Mountain in south central Pennsylvania, the lower members of this unit were also mapped as the Montebello Formation.[5] Details of the type section and of stratigraphic nomenclature for this unit as used by the U.S. Geological Survey are available on-line at the National Geologic Map Database.[6]

  1. ^ Ryder, R.T., Swezey, C.S., Crangle, R.D., Jr., and Trippi, M.T., 2008, Geologic cross section E-E’ through the central Appalachian Basin from the Findlay Arch, Wood County, Ohio, to the Valley and Ridge Province, Pendleton County, West Virginia: U.S. Geological Survey Scientific Investigations Map SIM-2985, 2 sheets with 48-page pamphlet. https://pubs.er.usgs.gov/publication/sim2985
  2. ^ Ryder, R.T., Crangle, R.D., Jr., Trippi, M.H., Swezey, C.S., Lentz, E.E., Rowan, E.L., and Hope, R.S., 2009, Geologic cross section D-D’ through the central Appalachian basin from the Findlay arch, Sandusky County, Ohio, to the Valley and Ridge province, Hardy County, West Virginia: U.S. Geological Survey Scientific Investigations Map SIM-3067, 2 sheets with 52-page pamphlet. https://pubs.er.usgs.gov/publication/sim3067
  3. ^ Ryder, R.T., Trippi, M.H., Swezey, C.S., Crangle, R.D., Jr., Hope, R.S., Rowan, E.L., and Lentz, E.E., 2012, Geologic cross section C-C’ through the central Appalachian basin from near the Findlay Arch, north-central Ohio, to the Valley and Ridge Province, Bedford County, south-central Pennsylvania: U.S. Geological Survey Scientific Investigations Map SIM-3172, 2 sheets with 70-page pamphlet. https://pubs.er.usgs.gov/publication/sim3172
  4. ^ Cite error: The named reference explanation was invoked but never defined (see the help page).
  5. ^ Conlin, Richard R.; Hoskins, Donald M. Geologic Map of the Mifflintown Qd (Map). 1:24,000. Cartography by United States Geological Survey. Pennsylvania Geological Survey, Fourth Series. A126.
  6. ^ "Geolex — Mahantango".